Improvement in apparatus for making lamp-black



y v V I Y P. NE FF. 1 I

g Lamp-Black.

I Patented May1\,1875.

Appafatus for Makin THE GRAPHIC C0.PHOTU?LITH.39H=41 PARK PLAGLN-Y- I My invention signed for employment in the manufacture of PETER NEFF, OF GAMBIER, OHIO.

IMPROVEMENT IN APPARATUS FOR MAKING LAMP-BLACK.

Specification forming part of Letters Patent No. 163,027, dated May 11, 1875; application filed March 8, 1875.

To all whom it may concern:

Be it known that I, PETER NEFF, of Gambier, in the county Ohio, have invented certain new and useful and use it, reference this specification.

relates to mechanism delamp-black, and more particularly to a combination, with suitable burners, either erect or inverted, of condensing-domes, the said Ways cool.

In the drawings, Figure 1 represents a condensing-dome, with the burners dependent therefrom. Fig. 2 shows similar domes, with the burners erect. Fig. 4 shows a variation in the form of a condensing-dome, whereb the gas is cooled immediately as it issues from the burners.

A is a pipe for conveying the gas to the burners B.

The under sides of the domes are made concave in form, so as to condense the smoke arising from the burning oil or gas, permitting it to more readily deposit itself upon the said concave surfaces.

It is apparent that the burners may be inverted, so as to pass down through the top of the dome, or ascend beneath the dome, and then curve downward, so as to deliver its jet in a downward direction, whereby the burner itself will act to spread the flame and create a hollow volume of gas, which shall burn only on its surface; or the said burners may stand erect beneath the said domes, and be provided or not with disks located in the top of the said burners, whereby the gas is spread. In fact, any kind of burner may be employed beneath the said concave surface or descending domes, which contain Water for the purpose of cooling and condensing the being had to the ac-. co npanying drawings, which form part of smoke, and causing it to deposit its carbon upon the said concavity beneath without departing from the V So, also, the form of the dome may be altered, as shown in Fig. 4, so that only a portion of the said concavedsurface is filled with water upon its upper side. The device shown in ig. 4 may be an outer cone, and provided with an inner cone, the apex of which may be projected into the mouth of the wide-top burner, spread the gas as it leaves the burner, and at the same time, to rapidly cool it and cause it to burn at a low temperature, thereby contimes advisable to employ the burners that rise from beneath, instead of those that pass y through and depend from, the domes; and,

also, theiform of dome shown in Fig. l is of very practicable shape, because of the ease with which it may be cleaned by the employmentof a traveling brush or box for collecting the said lamp-black.

It is necessary that the said domes or concaved surfaces above the burners should come down on all sides, in order that the smoke or products of combustion arisinginto them will not readily flow therefrom, but will, by the downward-projecting sides, be impeded, and will permit them to deposit a large portion of their charge upon the said concave surfaces; and the said surfaces should also be so constructed that, after the smoke has arisen into them, it will, after depositing its charge, escape from beneath caved surfaces, and then be permitted to rise and pass into other condensing apartments.

made to descend on all sides, so as effectually to impede the progress of the products of combustiomand by so condensing them ca use them to deposit their charge to a great extent, but, on the contrary, have permitted the free escape of the said products. And I am also aware that surfaces of that nature have been made both fiat and curved. I do not, therefore, claim such devices, and they do not serve the objects of my invention; but

What I do claim is In the manufacture of lamp-black, the combination, with the burner or burners B, of

overhanging domes or concave surfaces 0, filled with water upon their upper sides, the 

